Restore SEBPatch

SafeExamBrowser.Client.UnitTests/Operations/DisplayMonitorOperationTests.cs

@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2024 ETH Zürich, IT Services
+ * 
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Moq;
+using SafeExamBrowser.Client.Operations;
+using SafeExamBrowser.Logging.Contracts;
+using SafeExamBrowser.Monitoring.Contracts.Display;
+using SafeExamBrowser.Settings;
+using SafeExamBrowser.UserInterface.Contracts.Shell;
+
+namespace SafeExamBrowser.Client.UnitTests.Operations
+{
+	[TestClass]
+	public class DisplayMonitorOperationTests
+	{
+		private ClientContext context;
+		private Mock<IDisplayMonitor> displayMonitor;
+		private Mock<ILogger> logger;
+		private Mock<ITaskbar> taskbar;
+
+		private DisplayMonitorOperation sut;
+
+		[TestInitialize]
+		public void Initialize()
+		{
+			context = new ClientContext();
+			displayMonitor = new Mock<IDisplayMonitor>();
+			logger = new Mock<ILogger>();
+			taskbar = new Mock<ITaskbar>();
+
+			sut = new DisplayMonitorOperation(context, displayMonitor.Object, logger.Object, taskbar.Object);
+		}
+
+		[TestMethod]
+		public void Perform_MustExecuteInCorrectOrder()
+		{
+			var order = 0;
+
+			context.Settings = new AppSettings();
+			context.Settings.UserInterface.Taskbar.EnableTaskbar = true;
+
+			displayMonitor.Setup(d => d.InitializePrimaryDisplay(It.IsAny<int>())).Callback(() => Assert.AreEqual(++order, 1));
+			displayMonitor.Setup(d => d.StartMonitoringDisplayChanges()).Callback(() => Assert.AreEqual(++order, 2));
+
+			sut.Perform();
+
+			displayMonitor.Verify(d => d.InitializePrimaryDisplay(It.IsAny<int>()), Times.Once);
+			displayMonitor.Verify(d => d.StartMonitoringDisplayChanges(), Times.Once);
+		}
+
+		[TestMethod]
+		public void Perform_MustCorrectlyInitializeDisplayWithTaskbar()
+		{
+			var height = 25;
+
+			context.Settings = new AppSettings();
+			context.Settings.UserInterface.Taskbar.EnableTaskbar = true;
+			taskbar.Setup(t => t.GetAbsoluteHeight()).Returns(height);
+
+			sut.Perform();
+
+			displayMonitor.Verify(d => d.InitializePrimaryDisplay(It.Is<int>(h => h == height)), Times.Once);
+			displayMonitor.Verify(d => d.InitializePrimaryDisplay(It.Is<int>(h => h == 0)), Times.Never);
+		}
+
+		[TestMethod]
+		public void Perform_MustCorrectlyInitializeDisplayWithoutTaskbar()
+		{
+			var height = 25;
+
+			context.Settings = new AppSettings();
+			context.Settings.UserInterface.Taskbar.EnableTaskbar = false;
+			taskbar.Setup(t => t.GetAbsoluteHeight()).Returns(height);
+
+			sut.Perform();
+
+			displayMonitor.Verify(d => d.InitializePrimaryDisplay(It.Is<int>(h => h == height)), Times.Never);
+			displayMonitor.Verify(d => d.InitializePrimaryDisplay(It.Is<int>(h => h == 0)), Times.Once);
+		}
+
+		[TestMethod]
+		public void Revert_MustExecuteInCorrectOrder()
+		{
+			var order = 0;
+
+			displayMonitor.Setup(d => d.StopMonitoringDisplayChanges()).Callback(() => Assert.AreEqual(++order, 1));
+			displayMonitor.Setup(d => d.ResetPrimaryDisplay()).Callback(() => Assert.AreEqual(++order, 2));
+
+			sut.Revert();
+
+			displayMonitor.Verify(d => d.StopMonitoringDisplayChanges(), Times.Once);
+			displayMonitor.Verify(d => d.ResetPrimaryDisplay(), Times.Once);
+		}
+	}
+}